SimpleXMLElement::getDocNamespaces

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

SimpleXMLElement::getDocNamespaces — Returns namespaces declared in document

Description

public SimpleXMLElement::getDocNamespaces(bool $recursive = false, bool $fromRoot = true): array|false

Returns namespaces declared in document

Parameters

recursive

If specified, returns all namespaces declared in parent and child nodes. Otherwise, returns only namespaces declared in root node.

fromRoot

Allows you to recursively check namespaces under a child node instead of from the root of the XML doc.

Return Values

The getDocNamespaces method returns an array of namespace names with their associated URIs.

Examples

Example #1 Get document namespaces

<?php

$xml = <<<XML
<?xml version="1.0" standalone="yes"?>
<people xmlns:p="http://example.org/ns">
    <p:person id="1">John Doe</p:person>
    <p:person id="2">Susie Q. Public</p:person>
</people>
XML;
 
$sxe = new SimpleXMLElement($xml);

$namespaces = $sxe->getDocNamespaces();
var_dump($namespaces);

?>

The above example will output:

array(1) {
   ["p"]=>
   string(21) "http://example.org/ns"
}

Example #2 Working with multiple namespaces

<?php

$xml = <<<XML
<?xml version="1.0" standalone="yes"?>
<people xmlns:p="http://example.org/ns" xmlns:t="http://example.org/test">
    <p:person t:id="1">John Doe</p:person>
    <p:person t:id="2" a:addr="123 Street" xmlns:a="http://example.org/addr">
        Susie Q. Public
    </p:person>
</people>
XML;
 
$sxe = new SimpleXMLElement($xml);

$namespaces = $sxe->getDocNamespaces(TRUE);
var_dump($namespaces);

?>

The above example will output:

array(3) {
  ["p"]=>
  string(21) "http://example.org/ns"
  ["t"]=>
  string(23) "http://example.org/test"
  ["a"]=>
  string(23) "http://example.org/addr"
}

See Also